Enzymatic oxidation of neobetanin monitored by liquid chromatography with mass spectrometric detection
Journal Title: Challenges of Modern Technology - Year 2016, Vol 7, Issue 1
Abstract
The aim of this study was monitoring of enzymatic oxidation of neobetanin, an interesting type of betalains which is a partially oxidized betacyanin. As it belongs to betalains, it is water soluble and non-toxic, but a presence of a few functional groups makes it very reactive. Oxidation reactions were performed using horseradish peroxidase followed by spectrophotometric and mass spectrometric detection (LC-DAD-ESI-MS/MS) of obtained products. Enzymatic oxidation of neobetanin leads to a formation of new decarboxy- and dehydro-derivatives. The main identified oxidation product is 2-decarboxy-2,3-dehydroneobetanin. Searching for all formed oxidation products is extremely important for elucidation of the betalains oxidation mechanism.
Authors and Affiliations
Karolina Starzak, Dominika Szot, Anna Skopińska, Tomasz Świergosz, Sławomir Wybraniec
Keywords
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